Styling Blockquotes

Hello folks,

I tried to add some styling for blockquotes to the theme but I could not get it to work. It seems Child Themes aren’t supported so I tried to add the following code to the Custom CSS and directly to the style sheet but with no luck.

.site-content .entry-content blockquote:before,
.site-content .comment-content blockquote:before,
#tinymce blockquote:before,
.site-content .entry-content blockquote,
.site-content .comment-content blockquote {
font-family: Georgia, serif;
	font-size: 18px;
	font-style: italic;
	width: 640px;
    background-color: #b2bce8;
background-image: url(http://soniccollectors.com/wp-content/uploads/2013/12/quoteimage3.png);
	background-position: middle left;
	background-repeat: no-repeat;
    content: "";
    border-left:5px solid #0030ff
}

Any suggestions on how I can get this to work? I’m using Hueman 2.0.3

Site – http://www.chroniclechamber.com/CC2014/ (NOTE: I’m building the theme at the current address before moving it over to the actual site).